Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1925e99977ee238…

MALICIOUS

PDF

43.1 KB Created: 2020-08-16 00:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31841b1a81dc7c4a59b606d4797e87e6 SHA-1: e39cd34db1207c0bec2511b92d005d67a1811b35 SHA-256: b1925e99977ee238280e179fc5ba8547ae62cddcbefa13d64ff2a4b237ffb56d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious File: Malicious File

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination or distribute further malicious content. The presence of numerous links, including those to potentially malicious infrastructure, suggests a campaign aimed at distributing malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=typescript+formatter+vscode In PDF document text
    • http://files.pamelapalmadesigns.com/uploads/1/3/0/8/130813427/bosagosokulexutu.pdfIn PDF document text
    • http://zojug.krystalsolutions.com/uploads/1/3/0/7/130775320/godaneneretulafobiz.pdfIn PDF document text
    • http://bawekedu.degreesof-freedom.com/uploads/1/3/1/4/131453902/sutazozuvi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/turerefarerixom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/45384242225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/50284100312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/44395573271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6355/8815/files/22085462057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomekanob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7930/3317/files/xalunijok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/basic_of_trading_in_stock_market.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8784/5790/files/bharatiya_vidya_bhavan_history_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign: hollybeckley.com 3 samples

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C20 5380 bytes
SHA-256: f52f63320bf6e2332a51a3f2a2114f9bea4e8f6f5c860af3de9526d1c15c8e6c
font_01_sfnt_off00006e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E64 15116 bytes
SHA-256: ad32746aa85c0872ac0ddfd5c330c923b9797e5e40dd215f0153c9118f7f361a

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